Fastrax ITrax02 User manual
REV 1.2
User Manual
ITrax02 Evaluation Kit
1.08
This manual explains the setting up of the Evaluation
Kit.
December 12, 2002
Fastrax Oy
2002-12-12
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Evalkit User Manual
CHANGE LOG
Rev. Notes Date
1.0 Initial revision 12-12-2002
1.1 Added references 12-12-2002
1.2 Updated table of contents 12-12-2002
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CONTENTS
1. DESCRIPTION OF THE EVALUATION KIT .................................................... 5
1.1 External Interfaces...............................................................................5
1.2 AC/DC Power supply............................................................................6
1.3 RS232 cables........................................................................................7
1.4 On/Off/Reset switch.............................................................................8
1.5 Led Array..............................................................................................8
1.6 GPS antenna.........................................................................................8
2. IDC-40 I/O-CONNECTOR.............................................................................. 10
3. SETTING UP THE HARDWARE.................................................................... 12
3.1 Jumper settings for antenna bias (I/O-connector) ........................... 12
3.2 Jumper settings for Boot-mode select (I/O-connector) ................... 12
3.3 Jumper settings for serial interface (internal).................................. 12
3.4 Jumper settings for power supply (internal).................................... 12
3.5 Jumper setting for Antenna bias voltage shut-down (internal)....... 13
4. MOTHERBOARD PCB.................................................................................. 14
4.1 General Description ........................................................................... 14
4.2 PCB documents.................................................................................. 15
5. APPENDICES ............................................................................................... 16
5.1 Description of GPIO leds................................................................... 16
5.2 Schematics......................................................................................... 17
5.3 Components layout............................................................................ 18
5.4 BOM .................................................................................................... 19
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COMPLEMENTARY READING
The following reference documents are complementary reading for
this document:
Ref. # File name Document name
01 Install.pdf iTrax02 Evaluation Kit: Installation Guide
02 Uguide.pdf iTrax02 Evaluation Kit: GPS Workbench
Users Guide
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1. DESCRIPTION OF THE EVALUATION KIT
The following items are included in the Evaluation Kit
! Evaluation Kit including motherboard and iTRAX02
! AC/DC power supply
! Two RS232 cables (Null modem)
! GPS antenna
! Installation CD including GPS Workbench and
documentation
! Installation guide
Check that all items are included in the shipment before setting up the
system.
1.1 External Interfaces
The Evaluation Kit with the external interfaces is shown below.
15
69
234
78
1
2
39
40
GPIO15
ANTENNA BIAS
+3.3V /no jumper
+5.0V /with jumper
ANTENNA BIAS
NO BIAS /no jumper
WITH BIAS /with jumper
15
69
234
78
Port 0 Port 1 OFF-ON-Reset
40-pin I/O-conn.
ANT
GPIO 15 87 0
+
-
LED array
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Figure 1 Back panel of the Evaluation Kit
The following external interfaces are available:
! Antenna connector for external GPS antenna (SMA-female)
! DC-power connector (2.1mm socket)
! Two RS232 ports (DB9M)
! Off/On/Reset switch with built-in LED for power indication
! Two LED arrays for indicators (GPIO 0…15, active at “0”)
! 40-pin IDC-connector for external I/O interfaces
! GPIO 0…15, except 12 and 13 which are used internally
! Pulse measurement inputs PM0, PM1
! SPI bus
! 1PPS output
! XRESET (low active)
! Two jumpers for antenna bias selection (as described in
Figure 1 and in the following chapter). The antenna bias is
preset in factory for +5V.
! Connections are described in chapter 3.
NOTE! Be careful with static electricity! There are no extra
means for protection against static discharge other than the
CMOS-output clamping diodes of the baseband IC of
iTRAX02.
1.2 AC/DC Power supply
The Evaluation Kit is supplied with an AC/DC switch mode power
supply with the following properties:
! Wide range universal supply voltage 100-240VAC, 50-60Hz
! Output voltage: 6VDC, 2A (max 15W)
! Multi-standard mains plugs for UK, USA/Japan and EURO
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! Supplied with a 1.8m integral lead and 5 interchangeable
output plugs. Correct plug (2.1 mm) and polarity is preset
in factory.
NOTE! The suitable mains plug must be fitted prior usage.
NOTE! The suitable input voltage range is from +6 to +9VDC. A
direct connection from e.g. car battery (+12VDC) is not
recommended since the regulators may exceed the maximum
dissipation
.
1.3 RS232 cables
Two standard off-the-shelf Null-modem cables are included.
The cable uses two 9-pin female connectors as shown below:
12345
6789
12345
6789
1.8m
DB9F DB9F
Figure 2 Null modem cable with DB9F connectors
NOTE! Onwards from PCB revision D, the GPS Workbench
utilizes the RS232 RTS hand-shake signal to control
automatically the Boot-mode selection (GPIO15). This feature
may be omitted by using a manual jumper for GPIO15 and
then the following minimum cable connection works as well:
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Evalkit User Manual
2
3
RX
TX
2
3
RX
TX
5GND 5GND
Figure 3 Null modem cable with minimum connections
1.4 On/Off/Reset switch
The switch located on the back panel has a two-fold purpose:
1. Function as an ON/OFF switch
2. Function as an external RESET switch for the iTRAX02 receiver
The switch is of SPDT (Single Pole, Double Throw) – On-Off-Mom
type and the positions are following:
Position Function Comment
Left OFF Power off, LED turns off
Middle ON Power on, LED turns on
Right RESET Power on, LED is on, iTRAX02 gets RESET
Note that the switch returns to ON position after the switch is released
in the RESET position.
1.5 Led Array
The red led array indicates the corresponding GPIO 0…15 state: led
active means logical ‘low’ state (see Appendices for description of the
default firmware GPIO usage).
1.6 GPS antenna
The GPS antenna supplied with the Evaluation Kit is SM-66 from San
Jose Navigation Inc. The antenna is a high performance GPS patch
antenna with a low noise amplifier, suitable bias voltage is
+4.5…+5.5VDC. The net antenna gain including 5 meters cable loss
is about +20dB. Connect the antenna cable to the ANT connector
(SMA).
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The antenna is intended for magnet mounting. Place the antenna
outside, preferably on the roof with good whole sky satellite visibility.
If needed, the antenna installation can be extended with an extra
cable, but the cable loss should not exceed 10…15dB.
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2. IDC-40 I/O-CONNECTOR
The following I/O-connections are available at the back panel (pin 1 at
the upper right corner, pin 2 at the lower right corner etc.):
Table 1 IDC-40 I/O connector X6
Pin Signal Name In/Out Description
1 GPIO0 I/O General Purpose I/O (1)
2 GND Ground Power and signal ground
3 GPIO1 I/O General Purpose I/O (1)
4 GND Ground Power and signal ground
5 GPIO2 I/O General Purpose I/O (1)
6 GND Ground Power and signal ground
7 GPIO3 I/O General Purpose I/O (1)
8 GND Ground Power and signal ground
9 GPIO4 I/O General Purpose I/O (1)
10 GND Ground Power and signal ground
11 GPIO5 I/O General Purpose I/O (1)
12 GND Ground Power and signal ground
13 GPIO6 I/O General Purpose I/O (1)
14 GND Ground Power and signal ground
15 GPIO7 I/O General Purpose I/O (1)
16 GND Ground Power and signal ground
17 GPIO8 I/O General Purpose I/O (1)
18 GND Ground Power and signal ground
19 GPIO9 I/O General Purpose I/O (1)
20 GND Ground Power and signal ground
21 GPIO10 I/O General Purpose I/O (1)
22 GND Ground Power and signal ground
23 GPIO11 I/O General Purpose I/O (1)
24 GND Ground Power and signal ground
25 GPIO14 I/O General Purpose I/O (1)
26 GND Ground Power and signal ground
27 GPIO15 I/O General Purpose I/O (1)
28 GND Ground Power and signal ground
29 PM0 I Pulse measurement input 0
30 PM1 I Pulse measurement input 1
31 SPI_SDI I SPI Interface Data In
32 SPI_SDO O SPI Interface Data Out
33 SPI_SCK O SPI Interface Clock Out
34 SPI_XCS0 O SPI Interface Chip Select 0 Out
35 PPS O 1PPS signal output
36 XRESET_M I External Reset, Active Low
37 ANT_BIAS I Antenna bias for RF input
38 +V_ANT O Antenna bias DC Power Supply
39 GND Ground Power and signal ground
40 BIAS_SEL I Antenna bias selection (3.3/5.0VDC)
Table of contents
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